diff options
Diffstat (limited to 'doc/environment_variables.md')
| -rw-r--r-- | doc/environment_variables.md | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/environment_variables.md b/doc/environment_variables.md index a2cde92736..b79cd97363 100644 --- a/doc/environment_variables.md +++ b/doc/environment_variables.md @@ -39,6 +39,7 @@ some configuration as environment variables that can be set. gRPC C core is processing requests via debug logs. Available tracers include: - api - traces api calls to the C core - bdp_estimator - traces behavior of bdp estimation logic + - call_combiner - traces call combiner state - call_error - traces the possible errors contributing to final call status - channel - traces operations on the C core channel stack - client_channel - traces client channel activity, including resolver @@ -47,6 +48,7 @@ some configuration as environment variables that can be set. - compression - traces compression operations - connectivity_state - traces connectivity state changes to channels - channel_stack_builder - traces information about channel stacks being built + - executor - traces grpc's internal thread pool ('the executor') - http - traces state in the http2 transport engine - http1 - traces HTTP/1.x operations performed by gRPC - inproc - traces the in-process transport @@ -113,3 +115,11 @@ some configuration as environment variables that can be set. - native (default)- a DNS resolver based around getaddrinfo(), creates a new thread to perform name resolution - ares - a DNS resolver based around the c-ares library + +* GRPC_DISABLE_CHANNEL_CONNECTIVITY_WATCHER + The channel connectivity watcher uses one extra thread to check the channel + state every 500 ms on the client side. It can help reconnect disconnected + client channels (mostly due to idleness), so that the next RPC on this channel + won't fail. Set to 1 to turn off this watcher and save a thread. Please note + this is a temporary work-around, it will be removed in the future once we have + support for automatically reestablishing failed connections. |